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Finding the Fourth Proportional to 6,218.29, 8,581.86 and 4,643.65

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Solution

The fourth proportional to 6,218.29, 8,581.86 and 4,643.65 is: 6,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,218.29 : 8,581.86 = 4,643.65 : x
  2. Step 2: Convert to fraction form
    6,218.29/8,581.86 = 4,643.65/x
  3. Step 3: Cross multiply
    6,218.29x = 8,581.86 × 4,643.65
  4. Step 4: Simplify right side
    6,218.29x = 39,851,154.19
  5. Step 5: Solve for x
    x = 39,851,154.19/6,218.29
  6. Step 6: Final answer
    x = 6,408.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.